This one is usually enough! DAISO 6-in-1 Interchangeable Screwdriver - Black A set of 6 interchangeable bits for various uses. Easy to change, magnetic type. Bit Set Contents: Phillips x 3, Slotted x 3 Bit Sizes: Approx. 4.5mm diameter, Approx. 5.5mm diameter, Approx. 6mm diameter (both Phillips and slotted) You can also store the bits by opening the bottom of the grip, if you like! I bought this new, but I have many screwdrivers and don't seem to have a chance to use it, so I'm selling it unused. I will wrap it in bubble wrap and ship it anonymously. Instant purchase OK!